The Department of Natural Resources reminds everyone that after the heavy ice and snow cover melt on Michigan’s lakes this early spring, it may be common to discover dead fish or other aquatic creatures. This year’s winter with heavy snow, extreme cold temperatures and thick ice cover will create conditions that cause fish and other creatures such as turtles, frogs, toads and crayfish to die.
“Winterkill is the most common type of fish kill,” said DNR fisheries habitat specialist Chris Freiburger. “Given the conditions this winter with thick ice and deep snow cover, it will be particularly common in shallow lakes and streams and ponds. These kills are localized and typically do not affect the overall health of the fish populations or fishing quality.”
Winterkill occurs during especially long, harsh winters. Shallow lakes with excess aquatic vegetation and soft bottoms are particularly prone to this problem. Fish and other aquatic life typically die in late winter, but may not be noticed until a month after the ice leaves the lake because the dead fish and other aquatic life are temporarily preserved by the cold water. Read more